<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
</head>
<body>

</body>
<script>
	setTimeout(() => {console.log("0")}, 0)
	new Promise((resolve, reject) => {
		console.log("1")
		resolve()
	}).then(() => {
		console.log("2")
		new Promise((resolve, reject) => {
			console.log("3")
			resolve()
		}).then(() => {
			console.log("4")
		}).then(() => {
			console.log("5")
		})
	}).then(() => {
		console.log("6")
	})
	new Promise((resolve, reject) => {
		console.log("7")
		resolve()
	}).then(() => {
		console.log("8")
	})
</script>
</html>